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AP Physics C: E&M
11.8 Resistor Capacitor (RC) Circuits
BeginnerMCQMathematicalConceptual21.1k
A single-loop rectangular circuit diagram oriented horizontally. On the left vertical branch is a battery symbol with EMF label \(\mathcal{E}\), with the longer positive plate on top. On the top horizontal branch is a switch symbol in the open position labeled \(S\). On the right vertical branch is a resistor symbol labeled \(R\). On the bottom horizontal branch is a parallel-plate capacitor symbol labeled \(C\). Thin solid lines connect all four components into a single rectangular loop. No other labels, lines, text, or axes appear.
A series RC circuit with battery, switch, resistor, and capacitor.
A series circuit contains an ideal battery of electromotive force \(\mathcal{E}\), an open switch \(S\), a resistor of resistance \(R\), and an uncharged capacitor of capacitance \(C\), as shown in the diagram. At time \(t = 0\), switch \(S\) is closed. Which of the following correctly pairs the current through the circuit immediately after the switch is closed (\(t = 0^+\)) and a long time after the switch is closed (\(t \to \infty\))?

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